21911565

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{359}}^1$

素因数の和:693

約数の個数: 32

約数和(自身を含む): 37981440

約数和(自身を除く): 16069875

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 313, 359, 939, 1077, 1565, 1795, 4069, 4667, 4695, 5385, 12207, 14001, 20345, 23335, 61035, 70005, 112367, 337101, 561835, 1460771, 1685505, 4382313, 7303855, 21911565]

約数ペア:

[(1, 21911565), (3, 7303855), (5, 4382313), (13, 1685505), (15, 1460771), (39, 561835), (65, 337101), (195, 112367), (313, 70005), (359, 61035), (939, 23335), (1077, 20345), (1565, 14001), (1795, 12207), (4069, 5385), (4667, 4695)]